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Questions tagged [gis]

A Geographic Information System (GIS) captures, stores, analyzes, manages, and presents data that are linked to location(s). The GIS Stack Exchange should be considered for questions with this tag.

0 votes
1 answer
12 views

Loading geoJSON to Cesium does not work but I get no errors

I try to pass data from PostGIS to Cesium, I believe the simpler way is to use GeoJSON. To test it I do a query to my PostGIS to get some geoJSON data SELECT ST_AsGeoJSON(mygeom) FROM mytable where ...
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0 votes
1 answer
10 views

Plotting geographic data using coordinates

While it's possible to make a map plot by either: crs = area_def.to_cartopy_crs() ax = plt.axes(projection=crs) ax.background_img(name='BM') plt.imshow(result, transform=crs, extent=crs.bounds, ...
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0 answers
11 views

Raster io error while writing the GeotTiff

I have clipped the raster and updated the new raster's meta data. I am facing the following issue while writing clipped image into an output file Code with rasterio.open('example.tif', 'w', **out_meta)...
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0 answers
24 views

Retrieving MST for geographic coordinates using scipy minimum spanning tree

I am trying to create a minimum spanning tree (MST) from geographical coordinates using scipy, but for the life of me I cannot understand how to extract information to it . The scipy documentation is ...
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1 answer
15 views

Pixelwise regression on rasters in R

I am performing a pixelwise regression on 3 different raster files. My goal is to calculate the slope of elevation change on the raster, to see which areas show the fastest growth in elevation. These ...
0 votes
1 answer
33 views

GeoTiff raster data to Delta Lake / Parquet format?

Our organisation has been using Databricks recently for ETL and development of datasets. However I have found the libraries/capabilities for raster datasets very limiting. There are a few raster/Spark ...
0 votes
0 answers
25 views

Error in plot.xy(xy.coords(x, y), type = type, ...) : invalid RGB specification

I want to construct a spectral profile for my bands, however I get the error "Error in xy.coords(x, y) : 'x' and 'y' lengths differ". How do I go about solving this issue.The length(mycolors)...
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0 votes
1 answer
17 views

Oracle SQL aggregate Geometries (Longitude, Latitude)

I have this table I wanted to sort by POS ASC and also aggregate the two columns X, and Y (so that these POINTS become a LINESTRING, EPSG:25832) so that my ID becomes Unique. I don't have much ...
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0 votes
3 answers
50 views

How to do foreach in JS using data from laravel views?

var map = L.map('map').setView([-6.935118, 107.766995], 15); L.marker([-6.93155, 107.775831]).addTo(map) .bindPopup('Bus Stops') .openPopup(); I have this function on javascript, and I ...
-1 votes
0 answers
22 views

Display city name along with marker in maplibre?

In this example the label of Paris is not being shown due to the points being displayed. Is it possible to both display points and city labels? I have been trying to figure out how to do it with the ...
0 votes
0 answers
14 views

How can we create a raster attribute table using QGIS Python

I have a couple of raster files and I need to create attribute tables for them in QGIS using PyQGIS. I have tried raster attribute table plugin but how can I do it from the Python console?
0 votes
0 answers
29 views

Latitude and Longitude from Shape Files in Python

I have a shape file which I was able to view as follows: import geopandas as gpd df_municipalities = gpd.read_file("./CNNNew/Mexico/702825292843_s/mgau2000/agebs_urb_2000.shp") Next I want ...
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0 votes
0 answers
14 views

ArcGIS Tile Cache Folder convert to MBTiles or ECW File?

I used the map downloader to download web map and saved as ArcGIS Tiles format It's contain a "_alllayers" folder (there is L03 ~ L14 folder inside) , and "conf.xml" file I want to ...
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0 answers
25 views

How to convert this file of latitudes and longitudes to work with Power BI

I have a table of cities in argentina with latitudes and longitudes but I can't figure out how to convert them so I can use them with PowerBI maps. I don't have access to any GIS software nor do I ...
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0 answers
19 views

Сountry names are not displayed on the map

I`m trying to create map which has several layers. One of them consist of country borders (admin_level = 2,3), country name and region names. I use data of coordinates of Armenia and China from https:/...

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